SB2020090349 - NULL pointer dereference in busybox (Alpine package)
Published: September 3, 2020
Security Bulletin ID
SB2020090349
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2018-16851)
The vulnerability allows a remote authenticated attacker to cause DoS condition.
The vulnerability exists due to the entries are cached in a single memory object with a maximum size of 256MB during the processing of an LDAP search before Samba's AD DC returns the LDAP entries to the client. A remote attacker can trigger NULL pointer dereference in the LDAP service when this size is reached and cause the process to crash.
Remediation
Install update from vendor's website.